Or they're in Books (usually locally stored) on my iPhone.
There are no books, I am planning to read except when a copy is still a shipment. Basically, when I hear about a book, I look into acquiring it. If it is infeasible to acquire, I let it go, because I already have shelves (physical and virtual) of books I am reading -- a not-trivial fraction of I might not ever finish both because I don't get around to it and because really good books are reread.
My operating theory is that there are many many more books I would like to read than I will ever spend time reading. So I go with the moment rather than creating wishlists. YMMV. Good luck.
Books I haven’t read are on my bookshelf, and I just try to accept there are too many books to read so I don’t keep a list of the ones I don’t have. I rely on serendipity and impulse.
Books I have read are noted in a small document and compiled annually to a dead web forum I only continue to visit for that very purpose. Outside of a handful of books, completed ones are given to interested parties or the thrift shop.
These are my systems: certainly of no use to anyone else.
- is open source and well maintained.
- could be used both online and locally.
- offers both folders and tags for organization.
- could also be used for your pdf-annotation and generic web bookmarking needs.
While browsing sites like amazon and open library, you can capture the current page/book with all its metadata (author,year...) directly to Zotero in one click.
The heavy-weight champion remains Calibre [1]